SEMINAR: Membranes for Energy-Efficient Water Purification: Challenges and Opportunies
Membranes are an increasingly important technology for addressing the growing demand for clean water around the world. They are capable of removing a wide range of contaminants from feed waters of variable quality and are more energy efficient than other tradi+onal water purifica+on technologies. This seminar will present an overview of polymeric membranes used for water treatment, such as microfiltra+on, ultrafiltra+on, and reverse osmosis membranes, including a discussion of membrane synthesis and characteriza+on. The energe+c and economic costs and benefits of membrane use will be discussed and framed within the context of challenges facing more widespread employment of membranes for water purifica+on. Special emphasis will be given to fouling, which contributes significantly to decreased membrane efficiency. Strategies for reducing the impact of fouling, including surface modifica+on to minimize interac+ons between foulants and the membrane, will be discussed. The seminar will conclude with a presenta+on of physical sciences needs in membrane development for improved energy efficiency, membrane life+me, and separa+on quality.
Dr. Daniel J. Miller
Staff Scientist, JCAP
Dr. Daniel J. Miller is a staff scien+st at the Joint Center for Ar+ficial Photosynthesis (JCAP) in the Chemical Science Division at Lawrence Berkeley Na+onal Laboratory. Dan received his B.S. in Chemical Engineering from Bucknell University in 2006 and his Ph.D. from the University of Texas at Aus+n in 2013. While at UT, Dan studied fouling of ultrafiltra+on and microfiltra+on membranes, including organic fouling, biofouling, fouling characteriza+on, and membrane surface modifica+on to reduce fouling. A_er a postdoc at LBNL, he took a staff scien+st posi+on at JCAP, where he works on membranes in electrochemical devices for CO2 reduc+on and separa+on of CO2 reduc+on products.